<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <div id="main" style="width: 100%;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
    import echarts from 'echarts'
    import _ from 'lodash'
    export default {
        name: 'report',
        data(){
            return{
            options: {
                title: {
                text: '用户来源'
                },
                tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross',
                    label: {
                    backgroundColor: '#E9EEF3'
                    }
                }
                },
                grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
                },
                xAxis: [
                {
                    boundaryGap: false
                }
                ],
                yAxis: [
                    {
                        type: 'value'
                    }
                    ]
                }
            }
        },
        // 此时元素已经被渲染完毕了
        async mounted() {
            let myChart = echarts.init(document.getElementById('main'));
            const { data: res } = await this.$http.get('reports/type/1')
            if (res.meta.status !== 200) {
                return this.$message.error('请求折线图数据失败!')
            }
            const result = _.merge(res.data, this.options)
            myChart.setOption(result)
        }
    }
</script>

<style>

</style>